If you have to get it on discount, you can't afford to fly it. A stock Corvette is weak, because it is a huge, undergunned ship with a small basic shield. You will be shot down by NPCs in Cobras. You need at least 50 million on top of the purchase price to even consider flying the ship to the Engineers to actually make it do anything.
I made the same mistake you might be about to make OP - After I purchased the ship I realised it wasn't going to be going anywhere for a while. It's certainly nice to have it in the hangar while you go and buy all the pieces for it, just please be careful flying it stock because it will be a paper bullet magnet.